package au.edu.utas.yu_qiao_group.luckyman.utils;

import java.util.Random;

public class RandomUtils {
  public static String getRandom(int len) {
    Random r = new Random();
    StringBuilder rs = new StringBuilder();
    for (int i = 0; i < len; i++) {
      rs.append(r.nextInt(10));
    }
    return rs.toString();
  }
}
